The KeyScrambler Personal Firefox extension, scrambles your keystrokes at the kernel level to protect your login credentials from keyboard sniffers.

For users, that means your keystrokes will be encrypted at the keyboard driver, deep within the operating system. When the encrypted keystrokes reach the browser, KeyScrambler will decrypt them on-the-fly and let you see the keys you’ve typed.

The KeyScrambler Personal extension works with Firefox 1.5 – 3.0a3 and requires Windows.